<template>
  <div class="post-detail-page">
    <modal title="删除文章"
            :visible="modalIsVisible"
            @modal-on-close="modalIsVisible = false"
            @modal-on-confirm="hideAndDelete">
            <p>确定要删除文章吗？</p>
          </modal>
    <article class="w-75 mx-auto mb-5 pb-3" v-if="currentPost">
      <img
        :src="currentImageUrl"
        alt="currentPost.title"
        class="rounded-lg img-fluid my-4"
        v-if="currentImageUrl"
      />
      <h2 class="mb-4">{{ currentPost.title }}</h2>
      <div
        class="user-proftle-component border-top border-bottom py-3 mb-5 align-items-center row g-0"
      >
        <div class="col">
          <user-profile
            :user="currentPost.author"
            v-if="typeof currentPost.author === 'object'"
          ></user-profile>
        </div>
        <span class="text-muted col text-right font-italic"
          >发表与：{{ currentPost.createdAt }}</span
        >
      </div>
      <div v-html="currentHtml"></div>
      <div class="btn-group mt-5" v-if="showEditArea">
        <router-link
          :to="{ name: 'create', query: { id: currentPost._id } }"
          type="button"
          class="btn btn-success"
          >编辑</router-link
        >
        <button type="button" class="btn btn-danger" @click="kun">删除</button>
      </div>
    </article>
  </div>
</template>

<script lang="ts">
import UserProfile from "@/components/UserProfile.vue";
import MarkdownIt from "markdown-it";
import { GolbalDataProps, ImageProps, PostProps, UserProps } from "@/store";
import { computed, defineComponent, onMounted, ref } from "vue";
import { useRoute, useRouter } from "vue-router";
import { useStore } from "vuex";
import Modal from "@/components/Modal.vue";
import { ResponseType } from "@/store";
import createMessage from "@/hooks/createMessage";

export default defineComponent({
  components: { UserProfile, Modal },
  setup() {
    const store = useStore<GolbalDataProps>();
    const route = useRoute();
    const router = useRouter();
    const currenId = route.params.id;
    const modalIsVisible = ref(false)
    const md = new MarkdownIt();
    onMounted(() => {
      store.dispatch("fetchPost", currenId);
    });
    const currentPost = computed<PostProps>(() =>
      store.getters.getCurrentPost(currenId)
    );
    const showEditArea = computed(() => {
      const { isLogin, _id } = store.state.user;
      if (currentPost.value && currentPost.value.author && isLogin) {
        const postAuthor = currentPost.value.author as UserProps;
        return postAuthor._id === _id;
      } else {
        return false;
      }
    });
    const currentHtml = computed(() => {
      const { content } = currentPost.value;
      if (currentPost.value && content) {
        return md.render(content);
      } else {
        return null;
      }
    });
    const currentImageUrl = computed(() => {
      if (currentPost.value && currentPost.value.image) {
        const { image } = currentPost.value;
        return (image as ImageProps).url;
      } else {
        return null;
      }
    });
    const kun = () => {
      modalIsVisible.value = true
    }
    const hideAndDelete = () => {
      modalIsVisible.value = false
      store.dispatch('deletePost', currenId).then((rawData: ResponseType<PostProps>) => {
        createMessage('删除成功 2秒后跳转到专栏首页', 'success')
        setTimeout(() => {
          router.push({ name: 'colmun', params: { id: rawData.data.column } })
        },2000)
      })
    }
    return {
      currentPost,
      currentImageUrl,
      currentHtml,
      showEditArea,
      modalIsVisible,
      hideAndDelete,
      kun
    };
  },
});
</script>

<style scoped></style>
